Finding the Fourth Proportional to 8,899.83, 12,281.54 and 4,920.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,899.83 : 12,281.54 = 4,920.84 : x
2. Step 2: Convert to fraction form
   8,899.83/12,281.54 = 4,920.84/x
3. Step 3: Cross multiply
   8,899.83x = 12,281.54 × 4,920.84
4. Step 4: Simplify right side
   8,899.83x = 60,435,468.69
5. Step 5: Solve for x
   x = 60,435,468.69/8,899.83
6. Step 6: Final answer
   x = 6,790.63